Telephone Communication System Over a Single Telephone Line

1. A device for coupling a telephone device to at least one time-domain multiplexed digitized voice channel carried over bus topology wiring in a building, the wiring having at least two conductors, the device comprising: a local area network modem couplable to the wiring and operative to communicate with at least one other modem over the bus topology wiring in the building; selective means coupled to said local area network modem and operative to pass a first voice channel; a subscriber line interface coupled to said selective means and operative to convert said first voice channel to a first analog telephone signal; and a first telephone connector coupled to said subscriber line interface and couplable to a telephone device to couple the telephone device to said first analog telephone signal.

2. The device according to claim 1 , wherein the wiring is existing wiring in walls of the building and said device is operative to communicate with another device that is interchangeable with said device in the building over the wiring.

3. The device according to claim 2 , wherein the wiring is connected to concurrently carry a service signal.

4. The device according to claim 3 , wherein the wiring is a telephone wiring.

5. The device according to claim 2 , wherein the device is dimensioned to be mountable in an outlet cavity in a wall.

6. The device according to claim 2 , wherein the device is at least in part housed within an outlet.

7. The device according to claim 1 wherein the wiring is connected to concurrently carry a frequency domain multiplexed second analog telephone signal in a telephone band, and the device further comprises: a frequency selective means couplable to the wiring and operative to pass the said second analog telephone signal; and a second telephone connector coupled to said frequency selective means for coupling a telephone device to said second analog telephone signal.

8. The device according to claim 1 , wherein the multiplexed digitized voice channels carry Pulse Code Modulation (PCM) signals.

9. The device according to claim 1 , wherein the wiring is connected to further carry data signals, and the device further comprises a data connector operative to couple the data signals to a data unit.

10. A kit for use with a wiring system in a building having a continuous wire pair and multiple outlets for connecting to said wire pair and forming a bus topology, the wire pair carrying at least one time-domain multiplexed digitized voice channel, said kit comprising: at least two devices, each as defined in claim 1 , all of said devices having modems, and each of said modems being operative to communicate with all other modems of the other devices.

11. The device according to claim 1 , further comprising means for detachably electrically and mechanically coupling said device to an outlet opening in a wall.

12. A device for coupling at least one analog telephone service signal to at least one time-domain multiplexed digitized voice channel carried over a wiring having at least two conductors, for use with an analog telephone service connection for conducting the analog telephone service signal and connectable to an analog telephone set, the device comprising: at least one exchange line interface connectable to the at least one analog telephone service connection, and operative to convert the at least one analog telephone service signal to a digitized service signal; and a modem coupled to said at least one exchange line interface and operative to conduct said digitized service signal over the wiring.

13. The device according to claim 12 , wherein the device is used for coupling multiple service signals to multiple time-domain multiplexed digitized voice channels carried over the wiring, and wherein the device further comprising selective means coupled to said modem and to said at least one exchange line interface and operative to selectively couple said multiple digitized voice channels carried over the wiring to said digitized service channels.

14. The device according to claim 12 , wherein the wiring is existing wiring in the building, and said modem is operative to communicate with modems in the building over the existing wiring.

15. The device according to claim 14 , wherein the wiring is connected to concurrently carry a service signal.

16. The device according to claim 15 , wherein the wiring is a telephone wiring.

17. The device according to claim 14 , wherein the device is dimensioned to be mountable in an outlet cavity in a wall.

18. The device according to claim 14 , wherein the device is at least in part housed within an outlet.

19. The device according to claim 12 , wherein the wiring is connected to concurrently carry a frequency domain multiplexed analog telephone signal in a telephone band, and the device further comprises: a connection means for coupling to an analog telephone service; and a frequency selective means coupled to said connection means and couplable to the wiring, and operative to pass the analog telephone signal.

20. The device according to claim 12 , wherein the multiplexed digitized voice channels carry Pulse Code Modulation (PCM) signals.

21. The device according to claim 12 , wherein the wiring is connected to further carry data signals, and the device further comprises a data connector operative to couple the data signals to a data unit.

22. The device according to claim 12 , wherein said modem is operative to communicate with at least one other modem over the wiring.